766121001 has 16 divisors (see below), whose sum is σ = 1050105984. Its totient is φ = 496468224.

The previous prime is 766120933. The next prime is 766121003. The reversal of 766121001 is 100121667.

It is not a de Polignac number, because 766121001 - 2¹⁴ = 766104617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (766121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141985 + ... + 147281.

It is an arithmetic number, because the mean of its divisors is an integer number (65631624).

Almost surely, 2^766121001 is an apocalyptic number.

It is an amenable number.

766121001 is a deficient number, since it is larger than the sum of its proper divisors (283984983).

766121001 is a wasteful number, since it uses less digits than its factorization.

766121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 766121001 is about 27678.8908917969. The cubic root of 766121001 is about 915.0239379804.

Adding to 766121001 its reverse (100121667), we get a palindrome (866242668).

The spelling of 766121001 in words is "seven hundred sixty-six million, one hundred twenty-one thousand, one".